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cannot read m4a tags #480

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sezanzeb opened this issue Jul 4, 2020 · 1 comment · May be fixed by #625
Open

cannot read m4a tags #480

sezanzeb opened this issue Jul 4, 2020 · 1 comment · May be fixed by #625

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@sezanzeb
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sezanzeb commented Jul 4, 2020 •
edited

With this m4a file: test.m4a.zip

ffprobe 4.2.2 prints

album           : test3
artist          : test1
comment         : test7
genre           : test6
title           : test2
track           : 4

whereas mutagen 1.44.0-1

import mutagen.mp4 as m
f = m.MP4('test.m4a')
print(f.tags)

prints

{}

mutagen/mp4/__init__.py load doesn't have the tags in ilst. But when I add some tag in exfalso, it appears there.

The audio in the file was converted to m4a with gstreamer. Also, when converting that file to flac, the tags will appear in exfalso again.
@sezanzeb sezanzeb changed the title cannot read m4a tages cannot read m4a tags Jul 5, 2020
@echarlie echarlie mentioned this issue Feb 25, 2021
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@sezanzeb
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I just faced issues with m4a files again. They appear in other tools.

@sezanzeb sezanzeb linked a pull request Aug 13, 2023 that will close this issue
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Recurse m4a atoms to search for ilst sezanzeb/mutagen
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@sezanzeb